/*
 * Copyright (c) 1998-2011 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.server.dispatch;

import com.caucho.util.L10N;

import javax.servlet.Filter;
import javax.servlet.FilterChain;

/**
 * A filter chain factory which adds a filter.
 */
public class FilterChainFilterBuilder extends FilterChainBuilder {
  private static L10N L = new L10N(FilterChainFilterBuilder.class);

  private Filter _filter;
  
  /**
   * Adds a filter to the chain.
   */
  public FilterChainFilterBuilder()
  {
  }
  
  /**
   * Adds a filter to the chain.
   */
  public FilterChainFilterBuilder(Filter filter)
  {
    _filter = filter;
  }

  /**
   * Returns the filter.
   */
  public Filter getFilter()
  {
    return _filter;
  }

  /**
   * Sets the filter.
   */
  public void setFilter(Filter filter)
  {
    _filter = filter;
  }
  
  /**
   * Builds a filter chain dynamically based on the invocation.
   *
   * @param next the next filter in the chain.
   * @param invocation the request's invocation.
   */
  public FilterChain build(FilterChain next, Invocation invocation)
  {
    return new FilterFilterChain(next, _filter);
  }
}
